Heel-breast-trimming machine.



T. LUND.

HEEL BREAST TRIMMING MACHINE.

APPLRCATION FILED AUG.9. 1916. 1 29 3 1 34 Patented Feb. 4, 1919.

2 SHEETS-SHEET I.

T. LUND.

HEEL BREAST TRIMMING MACIHNE.

APPLICATION FILED was. ms.

1 ,293,1 34;, Patented Feb. 4, 1919.

2 SHEETS-SHEET 2.

UNITED STATES PATENT OFFICE.

THOMAS LUND, OF BEVERLY, MASSACHUSETTS, ASSIGNOR, BY MESNE ASSIGNMENTS,

TO UNITED SHOE MACHINERY CORPORATION, OF PATERSON, NEW JERSEY, A COB-PORATION OF NEW JERSEY.

Specification of Letters Patent.

HEEL-BREAST-TRIMMING MACHINE.

Patented Feb. 4, 1919.

Application filed August 9, 1916. Serial No. 118,931.

To all whom it may concern:

Be it known that I, THOMAS LUND, a citizen of the United States,residing at Beverly, in the county of Essex and State of Massachusetts,have invented certain Improvements in Heel-Breast-Trimmin Machines, ofwhich the following descrlption, in connection with the accompanyingdrawings, is a specification, like reference characters on the drawingsindicating like parts in the several figures.

This invention relates to machines for operating upon the heels of bootsand shoes after they are attached thereto and particularly to machinesfor shaping the breasts of such heels.

The invention is shown herein as embodied in a machine known to shoemanufacturers as the Louis heel breast trimming machine, which is shownand described in United States Letters Patent No. 784,340, granted March7, 1905, on application of Benjamin F. Mayo. This 'machine is providedwith a rotary cutter mounted on a horizontal shaft and with a shoe restor support which is movable vertically to carry the heel breast acrossthe field of operation of the cutter. The cutter is so formed and theshoe is so positioned relatively to it that, as the shoe support ismoved vertically across the acting face of the cutter, a shape of breastis produced which is curved longitudinally in conformity to the shapeofthe cutter and which laterally of the shoe is a straight line by reasonof the rectilinear vertical movement of the shoe support.

In modern shoe making a demand has arisen for heels which are formedwith a convexity laterally of the shoe particularly at the portion ofthe breast nearest the shan of the shoe. When heels are thus formed, theside lines of the heel breast are preferably maintained as in heelshaving laterally straight breasts, each of these lines being a curvestarting nearly straight at the tread face of the heel and extendininwardly and forwardly toward the toe o the shoe with graduallyincreasing curvature until it merges into the side line of the shank. Aheel with a lateral convexity not only has a more stylish and finishedappearance but also in such a heel there is more material in the part ofthe heel next the shank which strengthens the heel and enables it toform a better support for the shank of the shoe.

An object of the present invention is to provide a machine which willproduce a convex breast upon a heel particularly in that part of itsface next the shank and preferably without altering the side line of theheel orthe lateral contour of the portion of the breast face next thetop lift.

A feature of the invention consists in combination with a rotary cutterhaving its axis extending in a plane parallel to t e longitudinal medianplane of the shoe (that is the plane in which the longitudinal axis 0the shoe and the back seam lie) and having a contour to produce upon theheel, when the heel and cutter are moved relatively vertically, alaterally straight breast face, of means for moving the shoe and cutterrelatively in said plane to cause the cutter to produce a laterallycurved breast face. The

reast face so formed is preferably convex and the relative movementbetween the shoe and cutter may be affected, as shown herein, by asuitable templet and a cooperating roll placed the one upon a part fixedwith respect to the cutter and the other upon a part fixed with respectto the shoe. Preferably also, and as shown herein, the lateral convexityof the breast increases progressively from the breast face of the toplift where it is substantially straight to the shank portion of thebreast where the convexity is greatest.

These and other features of the invention will appear more fully fromthe following detailed description when read in connection with theaccompanying drawings and will be pointed out in the appended claims.

In the drawings,

Figure ,1 is a front view of a machine embodying this invention;

Fig. 2 is a side view of the head of the machine shown in Fig. 1;

Fig. 3 is a detail in perspective of the mechanism for movin the shoesupport forwardly and rearward y; and

Fig. 4 is a side view of the cutter and work support showing a shoebeing operated upon, the out being partially completed.

Referring to Fig. 1 of the drawings, the reference character 2 indicatesthe column of the machine upon the top portion of which is mounted ashaft 4 having suitable means, as shown, for the application of powerfor rotating the shaft. Upon the left hand end of the shaft is mounted arotary cutter, hidden in this figure but shown in end view in Fig. 2.The work supporting and positioning means comprises a member 10 havingan upwardly extending arm carryin a plate 12 forming a rest against whicthe tread face of the heel is held with its breast face against a narrowrib or flange 14 on the plate 12. A lateral projection 16 of the member10 is provided with clamping means 20 for adjustably holding a stem 22which supports a rest 24 for the forepart of the shoe bottom. As theoperator holds the shoe against the plate 12 and rest 24 the fingers ofthe right hand extend under the rear part of the shoe and may, as theshoe is raised to carry the heel across the path of the cutter,accidentally contact with the cutter. To prevent this, a guard 30 isprovided against which the fingers may rest in safety during the cuttingoperation.

The member 10 is adjustably fixed to the upper end of a longitudinallymovable rod 32 which passes upwardly through a long vertical bearing ina member 34 and is moved upwardly by a treadle 36 connected therewith bya universal joint at 38. The rod 32 is prevented from rotating by a pin40 carrying a roll that engages a vertical slot in the member 34. Themember 10 is held non-rotatably upon the upper end of the rod 32 by anut 41 and the rib 14 of the plate 12 is arranged substantially over thelongitudinal axis of the rod 32. By loosening the nut 41 the shoepositioning means may be swung about the rib 14 as a center to vary thedepth of cut made in the heel breast without varying the relation of thebreast edge of the top lift to the cutter.

The bearing member 34 has a dove-tailed portion engaging a lateral guide42 and may be adjusted laterally on said guide by means of a screw 44,being held in adjusted position by means operated by a hand wheel 46.This construction enables the position of the shoe support to be variedlaterally relatively to the cutter. The guide 42 is on a member 48, Fig.2, which is mounted in turn on a guide 50 on the machine frame forto-andfro or forward and rearward movement substantially at right anglesto the shaft 4. The member 48 is held, rearwardly by a spring 52.

Fixed to the post 32 above the member 34 and beneath the member 10 is abracket 54, Fig. 3, on the rear face of which in that figure is mounteda templet 60. The templet 60 has horizontal slots 62 ahd vertical slots64 are provided in bracket 54 so that the templet may be adjusted bothhorizontally and vertically relatively to the bracket 54. A screw 65passes through an angularly bent end of the templet and determines, bycontact with the bracket 54, the vertical position of the templet, whichis held in adjusted position on the bracket 54 by bolts 66. On the fixedguide 50 forming part of the machine frame is a roll T0 whichcotiperates with the templet 60 to move the shoe support forwardly andrearwardly as it is moved vertically to carry the shoe across the faceof the cutter, thereby determining the contour of the breast face of theheel, as shown in Fig. 4, giving the heel breast a convex face, theconvexity of which is greatest at the portion nearest the shank andshades out to practically nothing at the portion of the breast nearestthe tread face of the heel where the breast face is nearly parallel tothe face of the cutter.

The cutter has the usual hood 80 and to the forward part of the hood 80is slidingly connected at 82 a movable shield or guard 84 which normallycovers the front of the cutter. The sliding connection mentionedcomprises a roll mounted at 82 upon the hood 80 and engaging a curvedgroove formed in the shield 8-1. The lower end of the shield is pivotedto one end of a link 85, the other end of which embraces the cuttershaft. The bracket 54 is connected by a link 86 to the link 85 and henceas the work support is raised the shield 84 is lifted to permit the workto engage the cutter. The link 86 is connected by universal joints tothe link 85 and to the bracket 54, which connection enables the variousadjustments and movements of the work support to be made withoutaffecting the operation of the work support by the treadle 36.

Having fully described my invention, I claim as new and desire to secureby United States Letters Patent:

1. Lin a machine of the class described, the combination with a rotarycutter and a rest for the shoe constructed and arranged to position theshoe with the longitudinal median plane of the shoe parallel with theaxis of the cutter and for movement across the acting face of thecutter, of means for moving the shoe and cutter relatively in said planeto cause the cutter to produce upon the heel a laterally curved breastface.

2. In a machine of the class described, the combination with a rotarycutter and a rest for the shoe constructed and arranged to position theshoe with the longitudinal median plane of the shoe parallel with theaxis of the cutter and mounted for movement across the acting\ face ofthe cutter,of means for moving t e rest first away from the cutter andthen toward the cutter to produce upon the heel a convex 'breast face.

3. In a machine of the class described, the combination with a rotarycutter and a rest fpr the shoe constructed and arranged to position theshoe with the longitudinal median relatively to the tool at rightanglesto its to and fro movement,. and a link having umversa'l jointconnections at one vend to the shield and at the other end similarconnection to the work support.

13. In a machine of the class described the combination of a, rotarycutter arranged for rotation in a vertical plane, a shoe supportconstructed and arranged to position a shoe on its side for presentationof the heel breast to the cutter and movable vertically to carry theheel across the fieldpf operation ad'usin tud.

of the cutter, said support including a, late constructed and arrangedto enga e an position the trezld face of the top ift of the heelrelatively to the cutter, and means for the shoe support and platelongiinal v of the cutter shaft so that the plate may be located closeto the cutter but out of contact therewith.

In testimony whereof I have signed my name to this specification.

THOMAS LUND.

It is hereby certified that in Letters Patent No. 1,293,134, grantedFebruary 4, 1919, upon the application of Thomas Lund, of Beverly,Massachusetts, for an improvement in "Hecl-Breast-Trimming Machines, anerror appears in the printed specification requiring correction asfollows: Page 3, line 6, claim 3, for the article "the read and; andthat the said Letters Patent should be read with this correction thereinthat the same may conform to the record of the casein the Patent Omen.

Signed and sealed this 25th day of November, A. D., 1919.

M. H. COULSTON,

Acting C'onwniuioner of Patents.

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